Two-point Correlator Fits on HISQ Ensembles

Understand

We present our methods to fit the two point correlators for light, strange, and charmed pseudoscalar meson physics with the highly improved staggered quark (HISQ) action.

• We make use of the least-squares fit including the full covariance matrix of the correlators and including Gaussian constraints on some parameters.
• We fit the correlators on a variety of the HISQ ensembles.
• The lattice spacing ranges from 0.15 fm down to 0.06 fm.